Multi-Spectrum-Based Image Fusion Apparatus and Method, and Image Sensor

4. The multi-spectrum based image fusion apparatus of claim 1, wherein during the conversion from the target light into the image signal, the image sensor performs a multiple-exposures acquisition within one frame time.

6. The multi-spectrum based image fusion apparatus of claim 5, wherein an exposure duration of the exposure of the first type is less than that of the exposure of the second type.

7. The multi-spectrum based image fusion apparatus of claim 1, further comprising a signal controller, configured to control the image sensor to generate an image signal that meets a predetermined brightness requirement.

9. The multi-spectrum based image fusion apparatus of claim 7, further comprising an infrared light filling device; wherein the signal controller is further configured to control the infrared light filling device to fill infrared light for the image sensor.

12. A non-transitory storage medium for storing executable codes that, when executed, perform the multi-spectrum based image fusion method of claim 10.